I've been a member at City Sports for a while now, and I genuinely look forward to every visit. The…read morestaff are incredibly friendly and welcoming. Whether you're a first-timer or a regular, they always make you feel at home. It's a small thing, but it really sets the tone. The gym itself is kept spotlessly clean, which I appreciate more than anything. The equipment is always well-maintained and in great working order, no broken machines sitting around waiting to be fixed. If you're looking for a gym where you actually enjoy showing up and getting a good workout among friendly people. City Sports is it.

This is a complaint mostly as a Waterworks parent. If you didn't know, Waterworks Aquatics uses the…read morepools of several City Sports locations to teach kids' swimming lessons. While I went to town leaving reviews for Waterworks itself, I realize the intimate culprit is City Sports. Their pool is constantly undergoing some sort of HVAC issues which leads to ongoing and almost weekly pool closures. For gym members, I assume you are hoping your gym membership includes access to a pool which means 9 out of 10 times in any given month you are dealing with a closed pool. City Sports, get your act together. Why is your pool closed so many weeks out of the year???

Great equipments. Appreciate the gym opening on time with Nick working the front desk, greatly…read moreappreciate his friendly face so early in the morning.

Been a customer for over 4 years. Entrance area on the…read moreoutside is riddled with cobwebs and bugs. Broken machines are not even labeled and a few have complained after using them and getting hurt. No action.

Quick service. Kahj got me signed up and set super quick…read more Facilities are clean and working

I would like to address what a reviewer recently said about this location because I think they left…read morean unfair review with lots of hyperbole. This gym does not cost $100 per month. As shown on their individual location page, the highest tier membership is $64.99. There are cheaper memberships depending on what membership you sign up for. It is not overly packed during the times that I go, usually around 6:30pm on weekdays and sometimes Sunday evenings. I generally count 8-10 people at most and have never had to wait for a machine or equipment. The only humidity you experience is in one of the bathrooms if someone previously took a shower. However, they leave the door open to promote airflow. As far as I am aware, there is airflow and I have not once felt uncomfortable there. Judging from a majority of reviews, many people like and in fact, love this gym. It will not anger you, unless you are quick to get angry over things. It sounds to me that the real cause of this low review was being charged an amount that they did not agree with, and possibly missing important details when signing up. This could have been resolved with a phone call, instead of a poor review. I would urge you, dear reader, to approach negative reviews like this with caution. Understand that the employees here care, it is not a crowded gym or humid in any manner, and Trent is there to help you out when needed. There is no pressure to join if you sign up for a free trial either.

UGF has truly transformed fitness for us, from energizing group classes to personalized 1:1…read moresessions with Yo. The coaching team (Mike, Yo, Alex, and Ashley) create a friendly, inspiring space that feels safe and motivating, pushing you to improve day by day through creative, varied workouts that build strength, mobility, and overall well-being. We're proud and amazed at how much stronger and healthier we've become. So thankful to be part of the UGF family - can't imagine what I'd do without that UGF rhythm in my routine.

I've primarily worked out with Yo for the last 6 months, from private trainings to classes…read more I was daunted about going to a "real" gym, with things like large tractor tires and metal weight sleds. I was wrong. She made all the workouts really digestible, yet tough enough that I feel it days later. She also helped me with nutrition and calorie intake. Thanks Yo!

I started going to this gym by taking personal classes with Anthony. After a year of training with…read morehim, I built my confidence (and stamina) enough to sign up for Leo's strength and conditioning course. Five years later, I married Colin--a fellow iron warehouse weightlifter. Now we have a baby, and I'm trying to find time to get back to the gym. Even though we live in Castro Valley, we try to find time to go to Iron Warehouse because it's worth it for the community. Leo does an amazing job of uplifting people that want to get into shape--and stay in shape! Truly, he creates a community in this little garage gym. It's the kind of place where people wave hello to each other as they arrive. You get out what you put in. Get ready to sweat. :)

Great gym with all the equipment you'll ever need for powerlifting, weightlifting, or just strength…read moreand fitness in general.

Although you get your busy times here and there, I have experienced good customer service with the…read morefront desk people, the GM, and even the cleaning staff are pleasant. My family frequents this location almost daily and we enjoy it.

Glad to see the assisted strength equipments looking much cleaner than before!! Also the paint…read moreupdate and better air circulation flow here. Now they just need to revamp the restrooms please. Like the ladies toilet doors won't close properly and need better cleaning. Good selection of cardio equipment.

I've been going here for a few years now and it's awesome! Definitely missed the feeling of…read moreexercising in a community during the pandemic, and the instructors here make the classes well worth it. They are energetic, patient, and fun to learn from. If you prefer using machines, the equipment here is clean and well-maintained, and rarely is there a crowd (though some of the classes seem to have increased in popularity, so go early if you want a good spot), which makes it a nice place to exercise. I've convinced many a friend to come check out their classes too - there's a good variety of weight-training, cardio, dancercize, yoga, and more. The membership is totally worth it, especially if you are a Union City resident. Unlimited exercise classes every month, and there's also open gym for badminton and table tennis open to the public during select hours on weekdays and weekends (which you pay a drop-in fee for).

Poor management: Do you read your reviews?…read moreYou have several reviews over a period of years from various members complaining about a rude front desk staff person. Apparently, management chooses not to manage that issue. You need some fresh teachers and new classes in the exercise room. Same old boring stuff. Get some actual Mixxed Fit, U-Jam, or other classes with fresh choreography and music. It's like a senior center in there, which would be fine as far as the seniors, but even seniors like to do NEW choreography. At least pre-pandemic when Bob was teaching Zumba, he kept up with new routines. That's why his Monday night class was packed. There was actual choreography.

Since day one, this place has been nothing less than a second home for me. The trainers are always…read morehelpful and friendly. They have every bit of equipment you need to satisfy any chest day, down to your drop down low leg days. The owner Ryan is always wanting to provide the path and goals to be the best you you can be. Best of all, every member who walks through that door is never a stranger and are always welcoming. Come by and check it out for sure, definitely won't be disappointed.

I believe this is their third location, but I have to say it is my favorite so far. While all of…read morethem are great This specific location is extremely convenient for me. The gym is extremely clean (The manager must be military). I really appreciate the location of the machines and work out equipment. It makes it easy to put in a good super set without too much downtime. The trainers and staff are all very respectful and clean cut. This is the best gym I've ever been to. You come in work out hard and it's the perfect environment for crafting your body. 10/10

Been going for CrossFit for almost 1.5 years and love it here. Coaches are knowledgeable,…read moresupportive and passionate about helping you improve. Community is humble, passionate and about the right size (not too big feeling crowded or not too small). I have gradually improved in all dimensions - strength, cardio, flexibility, technique and mindset/mentality. 5 stars! Highly recommend. You have various options (CrossFit, bootcamp, powerlifting, Olympic weightlifting etc) to chose from depending on interest and where you are at in your fitness journey.

I've been going to CrossFit One World for about 14 months now, and it's been a great experience. I…read morefirst joined the Boot Camp program, and coaches JP and Moe really made a difference for me. I had no background in CrossFit or weightlifting and felt completely new to it all, but they explained the basics clearly, kept things motivating, and often stepped in to correct form so we built the right foundation. That gave me confidence and made the classes something I looked forward to instead of dreaded. Over time, I enjoyed Boot Camp so much that I moved into CrossFit. I'm still a beginner in CrossFit and probably will be for a while but my weight loss has accelerated since making the switch, and I've started feeling stronger, healthier, and more positive overall. So far, I've had classes with seven different coaches plus Brad, the owner, and every one of them has been dedicated, approachable, and engaged. Each coach has their own style, which makes it fun you pick up something new in every session. Brad himself is humble and very committed to building the kind of community that makes people want to keep coming back. The best part of this gym is the great community of coaches n people. It's full of people who push themselves, encourage each other, and make the hard work enjoyable. If you're looking for a place that challenges you but also supports you, CrossFit One World is it. Joining here has been one of the best decisions for my health and well-being.

Love that this gym is such a supportive environment for women, and has a nice variety of classes…read moreand workout equipment. The staff here are incredibly friendly and helpful, and I appreciate the laid back vibe.

I've been going to this gym for a few months , and just cancelled my membership. The whole reason I…read morejoined was because of how they promote themselves on social media. They make it seem like such a welcoming, supportive, safe space for girls, but my experience has been the complete opposite. Almost every interaction I've had with the staff has been rude, unprofessional, and uncomfortable for absolutely no reason. The girls that work there constantly have attitudes, act bothered when you ask questions, and are honestly just very unhelpful. There was even a time I asked for help using a machine because I genuinely didn't know how to use it, and the staff member got visibly annoyed even though she was literally just sitting on her phone doing nothing. That's honestly what most of them do every time I go in sit around on their phones but then act irritated when members need help. It's disappointing because I really wanted this to be a gym where I felt comfortable. I don't always feel comfortable at regular gyms, which is why I was excited about an all girls gym in the first place. But somehow I've felt more welcomed and comfortable at regular gyms than I ever have here, which is honestly sad considering what this place claims to stand for. If you're looking for a supportive "girls support girls" environment, this is probably not the place. Super disappointing experience overall.